Appendix - Kipor KGE12E Operation Manual

10. APPENDIX

1. The choice of the electric cable
The choice of the electric cable depends on the allowable current of the cable
and the distance between the load and the generator. And the cable section
should be big enough.
If the current in the cable is bigger than the allowable current, it will become over
hot and the cable will be burnt. If the cable is long and thin, the input voltage of
the electric appliance will be not enough, causing that the generator doesn't start.
In the following formula, you can calculate the value of the potential "e".
1 Length
Potential (v) =
58 Section area
The relations among of the allowable current, and length, section of the Insulating
cable (single core, multi-core) are as follow:
(Presume that the use voltage is 220V and the potential is below 10V.
The application of the single-core insulating cable
Length
beneath
50m 75m
Current
8 14
50A
30
100A 22
200A 60 60
300A 100 100
The application of the multi-core insulating cable
Length
beneath
50m 75m
Current
50A 14 14
100A 38 38
200A 38 2 38 2
300A 60 2
60 2
-
Current (A) 3
2
section mm
100m 125 150 200
22 22 30 38
38 50 50 60
60 80 100 125
100 125 150 200
2
section mm
100m 125 150 200
22 22 30 38
38 50 50 60
38 2 50 2 50 2 50 2
60 2 60 2 80 2 100 2
-
2. Modified coefficient table of ambient condition power
The conditions of generator rated output:
Altitude: 0 m Ambient temperature: 25
Ambient modified coefficient: C (Relative humidity 30%)
Ambient temperature ( )
Altitude
(m)
25 30
0 1 0.98
500 0.93 0.91
1000 0.87 0.85
2000 0.75 0.73
3000 0.64 0.62
4000 0.54 0.52
Note: When the relative humidity is 60%, the modified coefficient is C-0.01
When the relative humidity is 80%, the modified coefficient is C-0.02
When the relative humidity is 90%, the modified coefficient is C-0.03
When the relative humidity is 100%, the modified coefficient is C-0.04
Counting example:
When the rated power of generator is P =5KW, altitude is 1000m, ambient
temperature is 35 , relative humidity is 80%, the rated power of generator is:
P=P (C-0.02) = 5 (0.82-0.02) = 4KW
N
-
Relative humidity: 30%
35 40 45
0.96 0.93 0.90
0.89 0.87 0.84
0.82 0.80 0.78
0.71 0.69 0.66
0.6 0.58 0.56
0.5 0.48 0.46
N
-